On some recent trips I used an action camera with a handlebar bracket, set to take a picture at a predetermined interval. There were a few good photos, mixed in with a lot of forgettable ones. One day I actually mounted the camera to the helmet, it then records what you were looking at, which is not always the road, which makes it slightly more interesting. I liked the aspect of suddenly coming upon an interesting perspective when looking through them once I got home. I also like setting them to be a rotating randomised computer wallpaper, where I could try to guess exactly where I was in that photo, quite a while later. In the end though, I abandoned that strategy in favour of stopping and, as mentioned above, putting a little effort into framing the photograph. In some ways this involves staying mindful while moving, constantly looking for a beautiful or noteworthy perspective. I actually really like the change in mental outlook this can help create.
For my next trip I am thinking of using my phone camera on a handlebar bracket to perform time lapse photos, but also take a separate camera and stop for a few pics also.